It wasn't the thought of being mocked in the dressing room by the cast of Sons of Anarchy, or the hours of shooting nude scenes that prevented Charlie Hunnam from taking the career-changing role in Sam Taylor-Wood's adaptation of Fifty Shades of Grey.
The actor, who was replaced by Jamie Dornan in the lead role, has admitted that he suffered a breakdown after he struggled to keep on top of his hectic filming schedule.
"I wouldn't have signed up in the first place if I didn't want to do it," he told Moviefone. "It was a really, really difficult time in my life."
"I was going to finish Sons... at like 11pm Friday night, get on the plane Saturday morning to Vancouver for Fifty... missing the whole first week of rehearsal and start shooting Monday morning," he continued.
"And I was going to shoot that film, wrap that on the Wednesday and the following Monday I was going to start shooting Crimson Peak [Guillermo Del Toro's 2015 film] in Toronto. I just had like... Frankly, something of a nervous breakdown."